White corundum raw material for grinding wheel factory furnace core material or bulk material A1203 crystal, the content is greater than 98.5, its particle size is 36#,46#,100#, the content of Si02 in the raw materials used should be as little as possible, in order to prepare white corundum grinding powder, its manufacturing process is as follows:

1. The equipment used includes ball mill (150x 300,260x 300,350x 500), glass cylinder (300x 500), high temperature electric furnace, oven, washing tank and ventilation box, etc.

2, its manufacturing process is briefly described as follows:

a. Crushing

Put the quenched poem ball copper raw materials with different diameters into the drum, add water, put a rubber pad to seal the cover, then rotate the drum, and crush the abrasive under the stroke of the poem ball.

B, acid washing and water washing

The purpose is to wash away iron impurities in the abrasive.

C. Sorting

The water separation method is used for sorting in the glass cylinder.

d. Drying

Heat up 10(T20(TC drying, after drying, grind the agglomerates with glass grinding rod or horn spoon.

e. Calcination

Put the white corundum grinding powder into the electric furnace or muffle furnace, from room temperature to 850 degrees, sometimes up to 1200 degrees for W0.5-w1 grinding powder, and then keep the temperature for 5 hours.

f. Soaking

Abrasives used in sand-embedded grinding and fine polishing need to be treated. Soaking requirements are: 0.4g stearic acid plus 20g grinding powder plus 200 ml aviation gasoline, put into a grinding glass bottle to soak for more than seven days.

The impurity of white corundum determines its service life, and the quality of white corundum will affect its effect. White corundum in the production process will contain impurities, the main impurities are SiO2, Fe2O3, TiO2, the less impurities, the higher the quality of white corundum. The content of AL2O3 in white corundum also directly indicates the quality of white corundum. The impurities of white corundum determine its service life. Here is a specific explanation for you:

White corundum can also be used as a refractory material, if it contains impurities will affect its fire resistance. Some of the impurities in the refractory material are fusible, and some have a high melting point, but when the same main component coexists, it can produce fusible. Therefore, the presence of impurities often has a strong fluxing effect on the main component. Although the fluxing effect sometimes contributes to the liquid phase sintering of the material, it is seriously harmful to the resistance of the material to high temperature. White corundum is mainly used as an abrasive. In recent years, it has been widely used in refractory materials, such as iron hook castable, no blisters, steel jade bricks, prefabricated parts, permeable bricks, ladle bricks, magnesium aluminum carbon bricks, etc.

White corundum used in refractory materials generally used to do aggregate and fine powder, its advantages are high refractoriness, wear resistance, erosion resistance, high volume density, high alumina content, mainly used for high aluminum and alumina system. Products also have high load softening temperature and high temperature volume stability. The impurities of white corundum determine the life of the product during use. Since impurities have not been removed during smelting, white corundum also contains calcium hexaaluminate, calcium plagioclase, spinel, rutile and other secondary crystal phases and glass phases, iron alloys and solid solutions.